JDK类中java.lang.ref.WeakReference对象的内存泄漏

public static void main(String[] args) throws Exception {

while (true) {
java.util.logging.Logger.getAnonymousLogger();
Thread.sleep(1);
}
}

以下是几秒间隔内jmap命令的输出：

user@t1007:~> jmap -d64 -histo:live 29201|grep WeakReference
8: 22493 1079664 java.lang.ref.WeakReference
31: 1 32144 [Ljava.lang.ref.WeakReference;
106: 17 952

com.sun.jmx.mbeanserver.WeakIdentityHashMap$IdentityWeakReference
user@t1007:~> jmap -d64 -histo:live 29201|grep WeakReference
8: 23191 1113168 java.lang.ref.WeakReference
31: 1 32144 [Ljava.lang.ref.WeakReference;
103: 17 952

com.sun.jmx.mbeanserver.WeakIdentityHashMap$IdentityWeakReference
user@t1007:~> jmap -d64 -histo:live 29201|grep WeakReference
8: 23804 1142592 java.lang.ref.WeakReference
31: 1 32144 [Ljava.lang.ref.WeakReference;
103: 17 952 com.sun.jmx.mbeanserver.WeakIdentityHashMap$IdentityWeakReference

请注意,jmap命令强制使用FullGC.

JVM settings:
export JVM_OPT="
-d64 
-Xms200m -Xmx200m 
-XX:MaxNewSize=64m 
-XX:NewSize=64m 
-XX:+UseParNewGC 
-XX:+UseConcMarkSweepGC 
-XX:MaxTenuringThreshold=10 
-XX:SurvivorRatio=2 
-XX:CMSInitiatingOccupancyFraction=60 
-XX:+UseCMSInitiatingOccupancyOnly 
-XX:+CMSParallelRemarkEnabled 
-XX:+DisableExplicitGC 
-XX:+CMSClassUnloadingEnabled 
-XX:+PrintGCTimeStamps 
-XX:+PrintGCDetails 
-XX:+PrintTenuringDistribution 
-XX:+PrintGCApplicationConcurrentTime 
-XX:+PrintGCApplicationStoppedTime 
-XX:+PrintGCApplicationStoppedTime 
-XX:+PrintClassHistogram 
-XX:+ParallelRefProcEnabled 
-XX:SoftRefLRUPolicyMSPerMB=1 
-verbose:gc 
-Xloggc:$GCLOGFILE"

java version "1.6.0_18"
Java(TM) SE Runtime Environment (build 1.6.0_18-b07)
Java HotSpot(TM) Server VM (build 16.0-b13,mixed mode)

Solaris 10/Sun Fire(TM) T1000